The B.M.A.S. Modular Carbine incorporates a number of popular Bushmaster Modular accessories into a unique, lightweight, feature packed carbine that will stand out at any range. Four Rail Tubular Forend which free floats the barrel from the barrel nut forward to avoid any possibility of barrel deflection or accuracy degradation. Molded rubber sure grip rail covers snap over the rail sections on the handguard for rail protection. The ergonomic pistol grip is an ambidextrous design molded of urethane with a stipple finish to provide a solid non slip grip and firm control. The front B.M.A.S sight clamps on to fit directly over the milled front gas block. It folds down with the touch of a button to allow scope use and incorporates an elevation adjustable M16A2 front sight post.